Kadimendium Telescopic Gauge Set T Bore Hole Gauge Precision Telescoping Gage 8-150mm Adjustable Inner Diameter Micrometer Measuring Tools 6PCS

PACKAGE INCLUDE: Range: 5/16" - 6" (8mm to 150mm),6PCS in total(1 gage: 5/16 - 1/2" range x 4.20" overall; 1 gage: 1/2 - 3/4" range x 4.40" overall; 1 gage: 3/4 - 1-1/4" range x 4.40" overall; 1 gage: 1-1/4 - 2-1/8" range x 5.85" overall; 1 gage: 2-1/8 - 3-1/2" range x 5.85" overall; 1 gage: 3-1/2 - 6" range x 5.85" overall); Ethylene plastic bag packaging AUTOMATICALLY SELF CENTERING：Double action handles are rigidly attached to the contact plungers and are automatically self-centering,Assist in quick checking of holes, slots and recess up to 6 inch deep PRECISION GROUND：The ends of both contact are head treated steel and precision ground to a radius allowing proper clearance on the smallest hole the gauge will enter,used to obtain the exact size of holes and slots, which is suitable for factories, schools, offices and other places HARDENED STEEL MATERIAL：Contact points are hardened tool steel with heat treatment and chrome plating on the surface.Super quality, high rigidness, good wear resistance, durable in use WIDE APPLICATION: Constant spring tension delivers uniform contact pressure.Used for measuring holes, slots, grooves, and recesses in woodworking, metalworking, machining,and pattern-making applications